Cita APA (7th ed.)

Heldt, H., Piechulla, B., & Heldt, F. (2011). Plant biochemistry (4a. ed.). Elsevier.

Cita Chicago (17th ed.)

Heldt, Hans-Walter, Birgit Piechulla, i Fiona Heldt. Plant Biochemistry. 4a. ed. Londres: Elsevier, 2011.

Cita MLA (9th ed.)

Heldt, Hans-Walter, et al. Plant Biochemistry. 4a. ed. Elsevier, 2011.